My spring-cloud project with nacos, run success on debug, but build to jar run on server have error:

Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to localhost/<unresolved>:6379
    at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:78)
    at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56)
    at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:330)
    at io.lettuce.core.RedisClient.connect(RedisClient.java:216)
    at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:115)
    at java.base/java.util.Optional.orElseGet(Optional.java:364)
    at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:115)
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1595)

I have config with：

spring.redis.host=hostName         
spring.redis.port=6379  
spring.redis.password=password

Why still error?

sucess on debug error on jar server